How to get correct byte array from String

I have a string which contains binary value from 0 to 255. Now, if I use String.getBytes(),all the chars in the string which range from 128 to 160 will be convert to 63.
What's the problem?

You're assuming that you're working with Ascii values.
You're actually working with Unicode values.
When you use getChar() on a String, you get back a 16bit integer, the unicode index. When you do a getBytes() the Unicode values get mapped back to the default codepage of your machine.
Eg. on an english pc, the default locale is Windows latin, codepage 1252. On non-english pcs, it could be any encoding scheme.
If you're on a machine set up for a chinese locale, then the Unicode
values get mapped to your chinese codepage. The extended ascii values,
above 127 may not be defined in your codepage.
Try String.getBytes ( "Cp1252" );
Although I suspect that, whatever you're trying to do, it's probably not the right approach....
regards,
Owen

Similar Messages

How do I get a byte array from an object passed into the JNI?

This is what my java code looks like:
public class streamedData
protected byte[] m_value = null;
public byte[] getByteArray ()
return m_value;
/* code not pertaining to this question snipped. */
jclass streamedDataClass = env->GetObjectClass(jstreamedData);
// Get methodIDs for the various NPKI_Extension methods
value = env->GetMethodID(streamedDataClass, "getByteArray", "()[B");
lstreamedData->value = (unsigned char *)malloc (lstreamedData->length);
if (lstreamedData->value == NULL)
return INSUFFICIENT_MEMORY;
memset (lstreamedData->value, 0, lstreamedData->length);
memcpy (lstreamedData->value, env->CallByteMethodA(streamedDataClass, value, NULL), lstreamedData->length);
This is not working.
My question is, how do I get a copy of or read m_value in the JNI layer? Do I have to make the byte array public and access it as a field ID?
Any help would be appreciated. Why oh why can't there be a CallByteArrayMethod????

My question is, how do I get a copy of or read m_value in the JNI layer? Do I have to make the byte array public and access it as a field ID?
You can retrieve a handle to the byte array, through a method call, as you're doing now, or by directly accessing it through GetFieldID.
In the case of the method call, you'll want to do:jmethodID getByteArrayMethod = env->GetMethodID(streamedDataClass, "getByteArray", "()[B");
jbyteArray byteArray = static_cast<jbyteArray>( env->CallObjectMethod( jstreamedData, getByteArrayMethod ) );In the case of field access, you can do:jfieldID m_valueFieldID = env->GetFieldID( streamedDataClass, "m_value", "[B" );
jbyteArray byteArray = static_cast<jbyteArray>( env->GetObjectField( jstreamedData, m_valueFieldID ) );Once you have byteArray, you need to access it using the array operations:lstreamedData->value = env->GetByteArrayElements( byteArray, 0 );
// Do what you want to do, then release the array
env->ReleaseByteArrayElements( byteArray, lstreamedData->value, 0 );As always, Jace, http://jace.reyelts.com/jace, makes this easier. For example,void printByteArray( jobject jstreamedData ) {
streamedData data( jstreamedData );
JArray<JByte> byteArray = streamedData.m_value();
for ( int i = 0; i < byteArray.length(); ++i ) {
cout << byteArray[ i ];
}God bless,
-Toby Reyelts

How can I get the data array from SQL Server Database?

Hi,
I can write a data array(2D)into a table of my SQL Server Database. The data array was writen to a column with image type. I know a data array is transformed a binary string when writing into database, but I dont know how to get the data array when I fetch the binary string from database.
My question is:
How to transform the binary string into data array? which vi's should I use? I have tried unflatten from string but failed.
Any response is appriciated.
Red

happyxh0518 wrote:
> I can write a data array(2D)into a table of my SQL Server Database.
> The data array was writen to a column with image type. I know a data
> array is transformed a binary string when writing into database, but I
> dont know how to get the data array when I fetch the binary string
> from database.
>
> My question is:
> How to transform the binary string into data array? which vi's should
> I use? I have tried unflatten from string but failed.
In order to use Unflatten from string you first need to Flatten it
before writing it. Also depending on the database driver, the returned
data may actually not be binary but Hexadecimal encoded ASCII which you
would first have to decode to binray.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How to get the byte[] size dynamically from the StreamMessage object

Hi all,
Using JMS, I am receiving the FDF file as StreamMessage from the queue and attaching it to the PDF file which is present in the local system.
For that, I have written the code as follows:
{color:#0000ff} Message msg = jmsTemplate.receive();
if(msg !=null && msg instanceof StreamMessage)
StreamMessage message = (StreamMessage) msg;{color}
{color:#ff6600}//hardcoded the byte array size value
{color}{color:#0000ff} byte[] bytes = new byte[{color:#ff0000}856{color}];
System.out.println("read msg="+message.readBytes(bytes));{color}
{color:#0000ff}PdfReader pdfreader = new PdfReader("D:\\Managing_Workflows_No_Comment.pdf");
PdfStamper stamp = new PdfStamper(pdfreader, new FileOutputStream("D:\\12345.pdf"));
FdfReader fdfreader = new FdfReader(bytes);
stamp.addComments(fdfreader);
{color} {color:#0000ff} stamp.close();
{color}{color:#000000}The above code is working fine except with the hardcoded of {color:#ff0000}byte array{color}{color:#ff0000} size value{color} which is given in {color:#ff0000}RED{color} in color.
Can anybody know, {color:#000000}*how to get the byte[] size dynamically from the StreamMessage*{color} object ?
Any help would be highly beneficial for me !!!!
Thanks and Regards,
Ganesh Kumar{color}

When you create your stream message you could add an property to your message, something like streamSize that would contain the number of bytes in your stream message. Then you could get this property from the message before declaring your array.
Tom

What is the best way to convert a cluster into byte array or string

I'm writing a program that sends UDP packets and I've defined the data I want to send via large clusters (with u8/u16/u32 numbers, u8/u16/u32 arrays, and nested clusters). Right before sending the data, I need to convert the clusters either into strings or byte arrays. The flatten to string function is almost perfect for this purpose. However, it's appending lengths to arrays and strings which renders this method useless, as far as I can tell.
As I have many of these clusters, I would rather not hard code the unbundle by names and converting/typecasting to byte arrays or strings for each one.
Is there a feature or tool I am overlooking?
Thank you!

deceased wrote:
Flatten to string has a boolean input of "Prepend string or array size" ... The default value is true.
That only specifies if a string or array size should be prepended if the outermost data element is a string or array. For embedded strings or arrays it has no influence. This is needed for the Unflatten to be able to reconstruct the size of the embedded strings and arrays.
The choice to represent the "Strings" (and Arrays) in the external protocol to LabVIEW strings (and arrays) is actually a pretty bad one unless there is some other element in the cluster that does define the length of the string. An external protocol always needs some means to determine how long the embedded string or array would be in order to decode the subsequent elements that follow correctly.
Possible choices here are therefore:
1) some explicit length in the protocol (usually prepended to the actual string or array)
2) a terminating NULL character for strings, (not very friendly for reliable protocol parsing)
3) A fixed size array or string
For number 1) and 2) you would always need to do some special processing unless the protocol happens to use explicitedly 32 bit integer length indicators directly prepended before the variable sized that.
For number 3) the best representation in LabVIEW is actually a cluster with as many elements inside as the fixed size.

How to get all the values from the dropdown menu

How to get all the values from the dropdown menu
I need to be able to extract all values from the dropdown menu; I know how to get all those values as a string, but I need to be able to access each item; (the value in a dropdown menu will change dynamically)
How do I get number of item is selection dropdown?
How do I extract a ?name? for each value, one by one?
How do I change a selection by referring to particular index of the item in a dropdown menu?
Here is the Path to dropdown menu that I'm trying to access (form contains number of similar dropdowns)
RSWApp.om.GetElementByPath "window(index=0).form(id=""aspnetForm"" | action=""advancedsearch.aspx"" | index=0).formelement[SELECT](name=""ctl00$MainContent$hardwareBrand"" | id=""ctl00_MainContent_hardwareBrand"" | index=16)", element
Message was edited by: testtest

The findElement method allows various attributes to be used to search. Take the following two examples for the element below:
<Select Name=ProdType ID=testProd>
</Select>
I can find the element based on its name or any other attribute, I just need to specify what I am looking for. To find it by name I would do the following:
Set x = RSWApp.om.FindElement("ProdType","SELECT","Name")
If I want to search by id I could do the following:
Set x = RSWApp.om.FindElement("testProd","SELECT","ID")
Usually you will use whatever is available. Since the select element has no name or ID on the Empirix home page, I used the onChange attribute. You can use any attribute as long as you specify which one you are using (last argument in these examples)
You can use the FindElement to grab links, text boxes, etc.
The next example grabs from a link on a page
Home
Set x = RSWApp.om.FindElement("Home","A","innerText")
I hope this helps clear it up.

How to get name of table from front end

Hi,
How to get name of table from front end in EBS 11i?
thanx
Ashish

Hi
Sandeep is correct. The "Help"/"Record History" will give you the table/view name, but sometimes this particular menu function give me a "Record History is not available here." error message.
I then use the following menu functions (this will also give you additional information, like column details).
1) Open Forms
2) Click on Help/Diagnostics/Examine (*you might have to enter the APPS password at this point)
3) Change "Block" to "System"
4) Change "Field" to "Last_query"
The system will populate the "Value" field with the query that was executed in order to populate the form.
Regards
Frank

How to get the return values from a web page

Hi all :
how to get the return values from a web page ? I mean how pass values betwen webflow and web page ?
thank you very much
Edited by: jingying Sony on Apr 15, 2010 6:15 AM
Edited by: jingying Sony on Apr 15, 2010 6:18 AM

Hi,
What kind of web page do you have? Do you have possibility to for example make RFCs? Then you could trigger events (with parameters that could "return" the values) and the workflow could react to those events. For example your task can have terminating events.
Regards,
Karri

How to get warranty service claim from nokia c5-03...

how to get warranty service claim from nokia c5-03 in india because i have problem with nokia c5-03 I Purchase 2 week ago a new nokia c5-03 but from day 1 i facing same problem like 1) app close itself 2) internet browse close if any thing is downloading or downloading over 3) memory full always then i should reboot the phone then it work. 4) ovi map is open it shows memory full close the app So kindly help me how to get warranty service claim from nokia c5-03 in india i am unhappy with nokia c5-03
Solved!
Go to Solution.

i updated software also but the same problem cont... I want to know that nokia will give back money or exchange for other new mobile

For some reason the system is telling me my birth date is wrong when it's not and it won't let me proceed to reset my password. Can someone tell me how to get a "real" person from tech on line?

For some reason the system is telling me my birth date is wrong when it's not and it won't let me proceed to reset my password. Can someone tell me how to get a "real" person from tech on line?

contact itunes support

How to get the current week from sysdate?

Hi sir,
i want to know how to get the current week from sysdate?
thanks

Hi Nicolas
It seems you like to check my post and also make commend ;) thanks for your attention
Have you ever read the posts above and given solutions ?Yes, I did
Have you read the docs ? Yes, I checked
What's the added value here ?Did youYou shared doc with solution(long one), I shared short one which point same solution(Check what Joel posted)..So what is benefit, As you can guess oracle docs are sometimes become so complicated as specialy for beginner...(At least it was like that for me and Belive me somedocs are still sooo complicated even for oracle coworkers ) But for you I dont know ;)
=> Why writting the PS in bold ?Why.. Let me think... Ohh Maybe I am looking some questions(many) and even user get answer they should not changed status so I am reading some posts and try to get problem and loosing time..
So I am putting that PS wiht BOLD because I dont wanna lose time my friend ;) Because While I am trying to help ppl here In same time I am trying to giving support to my customer prod systems. Which mean time is very important for me...
Hope my answer could satisfy you..
One important PS for you.. You may not like my posts (or someone) but my friend I become tired to read&answer and make commend to on your comment which is about my posts.
I am not newbie in forum(At least I fell like that) and I belive I know how I should make post..
Thank you
Regards
Helios

How to get the selection parameters from logical database into one of the t

Hi Sap ABAP Champians,
How to get the selection parameters from logical database into one of the tab in the tabstrip selection-screen.
Please help me for this
Thanks
Basu

Hi
Thanks, that will work, but then I'll have to insert code into all my reports.
I can see that "Application Server Control Console" is able to rerun a report.
This must mean that the Report Server has access to the runtime parameters.
But how?
Cheers
Nils Peter

How to get payment document number from paid column in monthly invoice

Dear experts
I use SBO japan version and i need to know how to get payment document number from paid column in monthly invoice ?
in table MIN1, only contain invoice and credit note document number, there is no payment document number
thank you for your help
Best Regards
JeiMing

Dear Gordon
Yeah, you are right, i can use field MIentry in RCT2
thank you
Best regards
jeiming

Code for how to read an integer array from the command prompt...

hello,
Could anyone give me the code for how to read an integer array from the command prompt...its very urgent!..

If you are using a recent version of Java (5 or later) you can use Scanner:
http://java.sun.com/javase/6/docs/api/java/util/Scanner.html
That page has some example code on it, too.

How to get the date starting from 1 to the current date from the system dat

Dear all,
Please tell me how to get the date starting from 1 based on the system date
and it should come with respect of time also.
example.
suppose today is 6 Dec, 2006
so ABAP report should find the 1 dec. 2006.
Please help me as soon as possible.
Regards,

concatenate sy-datum0(2) '01' sy-datum4(4) into v_firstdate.
or yo ucan use the fm:
HR_JP_MONTH_BEGIN_END_DATE
usage:
    call function 'HR_JP_MONTH_BEGIN_END_DATE'
         exporting
              iv_date             = sy-datum
         importing
              ev_month_begin_date = gv_begda
              ev_month_end_date   = gv_endda.
Regards,
Ravi
Message was edited by:
        Ravi Kanth Talagana

How to get correct byte array from String

Similar Messages

Maybe you are looking for